Ignore session delete failure
Ignore session delete failure

When deleting all the active session, it is possible that a listed
session just expired and cleanup automatically. In that situation
the delete would return failure.

Change-Id: I17e4fc20eec1cecd605b9367b9d88b15f538f382
Signed-off-by: George Keishing <bef0a9ecac45fb57611777c8270153994e13fd2e@in.ibm.com>

openbmc/openbmc-test-automation,openbmc/openbmc-test-automation